Home / 1,511.12-2,085.93-1,353.49

Finding the Fourth Proportional to 1,511.12, 2,085.93 and 1,353.49

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Solution

The fourth proportional to 1,511.12, 2,085.93 and 1,353.49 is: 1,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.12 : 2,085.93 = 1,353.49 : x
  2. Step 2: Convert to fraction form
    1,511.12/2,085.93 = 1,353.49/x
  3. Step 3: Cross multiply
    1,511.12x = 2,085.93 × 1,353.49
  4. Step 4: Simplify right side
    1,511.12x = 2,823,280.18
  5. Step 5: Solve for x
    x = 2,823,280.18/1,511.12
  6. Step 6: Final answer
    x = 1,868.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.